I was present at one of them. Nov 2009, Dallas Market Hall. I was just inside the door when I heard a "bang" behind me. Everyone looked in that direction, but I could not see "who" did "what". I did not stick around, but continued on inside.

DMH has a "no-loaded-weapons-inside" rule and I can only guess that someone was attempting to unload/clear before entering. Never mind that having a loaded mag or any ammo on your person is also verboten...

I don't think it is hypocritical, I think it is an imperfect solution to a complex problem. Until someone comes up with a perfect solution, I'll live with the situation as is...